From Cabinet of Wonders via mental_floss, a blog post with a bunch of pictures of tourists posing as if they're holding up or pushing over the leaning tower of Pisa -- except from the wrong angle ... "which, when taken out of context, looked like some kind of mass-hallucination tai chi class."

You can't tell what these people are doing, only that they're concentrating very hard on accomplishing something they think is enjoyable.